31047553131 has 16 divisors (see below), whose sum is σ = 47958649344. Its totient is φ = 17498424384.

The previous prime is 31047553127. The next prime is 31047553171. The reversal of 31047553131 is 13135574013.

It is not a de Polignac number, because 31047553131 - 2² = 31047553127 is a prime.

It is a super-2 number, since 2×31047553131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31047553092 and 31047553101.

It is not an unprimeable number, because it can be changed into a prime (31047553111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10124871 + ... + 10127936.

It is an arithmetic number, because the mean of its divisors is an integer number (2997415584).

Almost surely, 2^31047553131 is an apocalyptic number.

31047553131 is a deficient number, since it is larger than the sum of its proper divisors (16911096213).

31047553131 is a wasteful number, since it uses less digits than its factorization.

31047553131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20252890.

The product of its (nonzero) digits is 18900, while the sum is 33.

The spelling of 31047553131 in words is "thirty-one billion, forty-seven million, five hundred fifty-three thousand, one hundred thirty-one".